This paper presents an investigation into the detection of incipient fatigue cracks in a gearbox.On the basis of modulation theory,a signal processing technique is proposed in the paper to isolate irregular signals fr...This paper presents an investigation into the detection of incipient fatigue cracks in a gearbox.On the basis of modulation theory,a signal processing technique is proposed in the paper to isolate irregular signals from complex vibration signals,and to obtain the amplitude and phase modulation functions without use of any tachometers or frequency multiplier.It has been shown that this signal processing method is useful for enhancement of the signal containing the fault features and effective in the detection of incipient defects in the gearbox.展开更多
文摘This paper presents an investigation into the detection of incipient fatigue cracks in a gearbox.On the basis of modulation theory,a signal processing technique is proposed in the paper to isolate irregular signals from complex vibration signals,and to obtain the amplitude and phase modulation functions without use of any tachometers or frequency multiplier.It has been shown that this signal processing method is useful for enhancement of the signal containing the fault features and effective in the detection of incipient defects in the gearbox.
